Updated Synology DSM, now hazel cannot init sftp

I recently upgraded my Synology DSM and my rules which copy items using SFTP stopped working.
when I edit my server configuration in Hazel, I get this message :
Error connecting to
...
The folder "_Kiosque" could not be
accessed. Failure establishing ssh
session
The Log :
Failed trying to get contents of directory for sftp://toto@www.xyx.net:5022/Doc/_Kiosque/test.txt: Error Domain=se.haxx.curl.libcurl.CURLcode Code=2 "The folder “_Kiosque” could not be accessed. Failure establishing ssh session" UserInfo={NSLocalizedFailureReason=Failed initialization, NSErrorFailingURLStringKey=sftp://toto@www.xyx.net:5022/Doc/_Kiosque/, NSErrorFailingURLKey=sftp://toto@www.xyx.net:5022/Doc/_Kiosque/, NSLocalizedDescription=The folder “_Kiosque” could not be accessed. Failure establishing ssh session}
thanks for any help.
when I edit my server configuration in Hazel, I get this message :
Error connecting to
...
The folder "_Kiosque" could not be
accessed. Failure establishing ssh
session
The Log :
Failed trying to get contents of directory for sftp://toto@www.xyx.net:5022/Doc/_Kiosque/test.txt: Error Domain=se.haxx.curl.libcurl.CURLcode Code=2 "The folder “_Kiosque” could not be accessed. Failure establishing ssh session" UserInfo={NSLocalizedFailureReason=Failed initialization, NSErrorFailingURLStringKey=sftp://toto@www.xyx.net:5022/Doc/_Kiosque/, NSErrorFailingURLKey=sftp://toto@www.xyx.net:5022/Doc/_Kiosque/, NSLocalizedDescription=The folder “_Kiosque” could not be accessed. Failure establishing ssh session}
thanks for any help.